@article{ref1,
title="The threshold gravity model and transport geography: How transport development influences the distance-decay parameter of the gravity model",
journal="Journal of transport geography",
year="1993",
author="Luoma, Martti and Mikkonen, Kauko and Palomäki, Mauri",
volume="1",
number="4",
pages="240-247",
abstract="A threshold gravity model and its possibilities as a planning and forecasting tool for transport problems are presented. The models are based on the earlier papers of the authors. The principal ideas concerning the development of the threshold value gravity model are presented. The new findings are the behaviour of models in representing the real mobility patterns of the population seeking central services. There is an attempt to predict some of the future travel intensities at different distances from the central places.<p />",
language="",
issn="0966-6923",
doi="10.1016/0966-6923(93)90048-5",
url="http://dx.doi.org/10.1016/0966-6923(93)90048-5"
}